25 PIN D-SUB CONNECTOR
| Pin | Name | Dir | Description | 
|---|---|---|---|
| 1 | GND |  | Ground | 
| 2 | TXD- |  | Transmit Data | 
| 3 | RXD- |  | Receive Data | 
| 4 | RTS |  | Request To Send | 
| 5 | CTS |  | Clear To Send | 
| 6 | DSR |  | Data Set Ready | 
| 7 | GND |  | Ground | 
| 8 | DCD |  | Data Carrier Detect | 
| 20 | DTR- |  | Data Terminal Ready | 
| 22 | RING |  | ? | 
Note: Direction is Printer relative Computer.
| Contributor: | Joakim Ögren | 
| Source: | Technote HW19: Pinouts at Apple Technical Notes | 
  Copyright © The Hardware Book Team 1996-2004.
  May be copied and redistributed, partially or in whole, as appropriate.
  Document last modified: 2002-01-10